019 
FPUS3 KBOI 010926
SFDBOI

IDAHO STATE FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE IDAHO
330 AM MDT TUE JUL  1 1997

STRONG UPPER LOW TRACKING ENEWD ACROSS CENTRAL ID THIS MORNING ON
ITS WAY THROUGH WEY 12Z AND ACROSS SRN MT AFTER THAT.  HEAVY RAIN
HAS WRAPPED AROUND NW FLANK OF LOW INTO WCENTRAL ID MOUNTAINS AND
WRAPPING SEWD SINCE AROUND 07Z.  FROM SATELLITE EXPECT TO SEE SWATH
OF MODERATE TO HEAVY RAINS FOLLOW THE TRACK OF THE H5 LOW ACROSS
CENTRAL ID THIS MORNING.  LIGHTER RAINS TO THE NORTH AND SOUTH
WILL TAPER OFF FROM WEST TO EAST THIS MORNING AS THE LOW MOVES
AWAY.  SURFACE LOW DEEPENS RAPIDLY BUT MOVING AWAY INTO MT FAST
ENOUGH TO KEEP TIGHTEST PRESSURE GRADIENT OUT OF ERN ID...WILL
KEEP WINDS ONLY IN THE 15-25 MPH RANGE TODAY IN THE MAGIC VALLEY
AND UPPER SNAKE.  NEXT PROBLEM IS WEAKER LOW NEAR 42/130W.  NGM
PROGS MAIN VORT CENTER TO WMC 12Z WED AND PAST PIH 00Z THU...
MAINTAINING SURFACE LOW AHEAD OF IT ALONG SRN ID BORDER.  MAX RH
AREA FOLLOWS SAME TRACK AS CURRENT H5 LOW.  WEAKER/DRIER ETA AND
MIDDLE-STRENGTH AVN FOLLOW SAME TRACK.  WITH HIGH DEW POINTS LEFT
BEHIND BY CURRENT RAIN-PRODUCING SYSTEM WILL SELECT NGM AND BASE
POPS ACCORDING TO TRACK OF MAX RH...BEGINNING AROUND SUNRISE WED
SWRN ID AND SPREADING ENEWD ACROSS CENTRAL ID DURING THE DAY WED.
POPS WILL BE KEPT IN THE 30-50% RANGE THOSE AREAS FLANKED BY LOWER
POPS BOTH NORTH AND SOUTH.  CONVECTIVE POTENTIAL WEAK DUE TO ALREADY
COOL SURFACE AIR MASS.  TROUGH EXITS THU FOR MOSTLY SUNNY/WARMER
4TH OF JULY.  NEXT LOW NEAR 50/140 00Z FRI WOULD NORMALLY STAY THERE
THIS TIME OF YEAR BUT THEY KEEP COMING IN.  NEW MRF SHOWS ANOTHER
TROUGH SWINGING INLAND SUNDAY.  L COLIN
BOI 234 TWF/BYI 322 LWS 6-1

.BOI...NONE.